<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
    <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
    <el-breadcrumb-item>数据统计</el-breadcrumb-item>
    <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card>
      <div id="main" style="width: 750px;height:500px;"></div>
    </el-card>
  </div>
</template>

<script>
// 1.导入echarts
import * as echarts from 'echarts'
import _ from 'lodash'
export default {
    data(){
        return {
          // 需要合并的数据
          options: {
        title: {
          text: '用户来源'
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'cross',
            label: {
              backgroundColor: '#E9EEF3'
            }
          }
        },
        grid: {
          left: '3%',
          right: '4%',
          bottom: '3%',
          containLabel: true
        },
        xAxis: [
          {
            boundaryGap: false
          }
        ],
        yAxis: [
          {
            type: 'value'
          }
        ]
      }
        }
    },
    created(){

    },
    // 此时页面上的元素已经被渲染完毕了
   async mounted(){
      // 基于准备好的dom，初始化echarts实例
      var myChart = echarts.init(document.getElementById('main'));

     const{data:res}= await this.$http.get('reports/type/1')
     if(res.meta.status!==200) return this.$message.error('获取折线图数据失败')
      // 4.准备数据和配置项
     const result= _.merge(res.data,this.options)
      //5.展示数据
      myChart.setOption(result);
    },
    methods:{

    }
}
</script>

<style lang="less" scoped> 

</style>